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7.Human Health and Disease
normal
During conjugation in Paramecium
A
Out of the four micronuclei formed, three nuclei degenerate
B
Out of the twelve macronuclei formed, four nuclei degenerate
C
Zygote nucleus undergoes eight successive divisions in each conjugant
D
Out of the sixteen nuclei formed from zygote, $12$ become macronuclei and $4$ micronuclei
Solution
(a) The diploid micronucleus of each conjugant divides by meiosis.
Thus,$ 4$ haploid daughter micronuclei are produced of which $3$ degenerates in each conjugant,
while the remaining one divides by mitosis $2$ unequal pronucleus.
Standard 12
Biology
